Psychosocial measures Beck Depression Inventory (BDI). The BDI (Beck, 1967) taps several domains of depression. Of the 21 items on the scale, 11 deal with cognition, 2 with affect, 2 with overt behavior, 1 with interpersonal symptoms and 5 with somatic symptoms. In overweight, type 2 diabetic patients, somatic symptoms may reflect physical disease processes (e.g., fatigue or inflammation rather than primary depression. For this reason, subanalyses separating out effects of the intervention on somatic vs nonsomatic items will be important. The BDI has been used extensively in English, Spanish and various European speaking populations with internal reliability between α = .85-.93 (e.g., Sanz & Vázquez, 1993).